/* search.c - ldbm backend search function */
+/* $OpenLDAP$ */
+/*
+ * Copyright 1998-2000 The OpenLDAP Foundation, All Rights Reserved.
+ * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
+ */
#include "portable.h"
Backend *be,
Connection *conn,
Operation *op,
- char *base,
+ const char *base,
+ const char *nbase,
int scope,
int deref,
int slimit,
int tlimit,
Filter *filter,
- char *filterstr,
- char **attrs,
- int attrsonly
-)
+ const char *filterstr,
+ struct berval **attrs,
+ int attrsonly )
{
struct ldbminfo *li = (struct ldbminfo *) be->be_private;
int rc, err;
- char *text;
+ const char *text = NULL;
time_t stoptime;
ID_BLOCK *candidates;
- ID id;
+ ID id, cursor;
Entry *e;
struct berval **v2refs = NULL;
Entry *matched = NULL;
char *realbase = NULL;
int nentries = 0;
int manageDSAit = get_manageDSAit( op );
-
+ int cscope = LDAP_SCOPE_DEFAULT;
+
+ struct slap_limits_set *limit = NULL;
+ int isroot = 0;
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
+ "ldbm_back_search: enter\n" ));
+#else
Debug(LDAP_DEBUG_TRACE, "=> ldbm_back_search\n", 0, 0, 0);
+#endif
+
+
+ if ( *nbase == '\0' ) {
+ /* DIT root special case */
+ e = (Entry *) &slap_entry_root;
+
+ /* need normalized dn below */
+ realbase = ch_strdup( e->e_ndn );
+
+ candidates = search_candidates( be, e, filter,
+ scope, deref, manageDSAit );
- /* get entry with reader lock */
- if ( deref & LDAP_DEREF_FINDING ) {
- e = deref_dn_r( be, base, &err, &matched, &text );
+ goto searchit;
+
+ } else if ( deref & LDAP_DEREF_FINDING ) {
+ /* deref dn and get entry with reader lock */
+ e = deref_dn_r( be, nbase, &err, &matched, &text );
+
+ if( err == LDAP_NO_SUCH_OBJECT ) err = LDAP_REFERRAL;
} else {
- e = dn2entry_r( be, base, &matched );
+ /* get entry with reader lock */
+ e = dn2entry_r( be, nbase, &matched );
err = e != NULL ? LDAP_SUCCESS : LDAP_REFERRAL;
text = NULL;
}
struct berval **refs = NULL;
if ( matched != NULL ) {
+ struct berval **erefs;
matched_dn = ch_strdup( matched->e_dn );
- refs = is_entry_referral( matched )
- ? get_entry_referrals( be, conn, op, matched )
+ erefs = is_entry_referral( matched )
+ ? get_entry_referrals( be, conn, op, matched,
+ base, scope )
: NULL;
cache_return_entry_r( &li->li_cache, matched );
+
+ if( erefs ) {
+ refs = referral_rewrite( erefs, matched_dn,
+ base, scope );
+
+ ber_bvecfree( erefs );
+ }
+
} else {
- refs = default_referral;
+ refs = referral_rewrite( default_referral,
+ NULL, base, scope );
}
send_ldap_result( conn, op, err,
matched_dn, text, refs, NULL );
- if( matched != NULL ) {
- ber_bvecfree( refs );
- free( matched_dn );
- }
-
+ ber_bvecfree( refs );
+ free( matched_dn );
return 1;
}
if (!manageDSAit && is_entry_referral( e ) ) {
/* entry is a referral, don't allow add */
char *matched_dn = ch_strdup( e->e_dn );
- struct berval **refs = get_entry_referrals( be,
- conn, op, e );
+ struct berval **erefs = get_entry_referrals( be,
+ conn, op, e, base, scope );
+ struct berval **refs = NULL;
cache_return_entry_r( &li->li_cache, e );
- Debug( LDAP_DEBUG_TRACE, "entry is referral\n", 0,
- 0, 0 );
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
+ "ldbm_search: entry (%s) is a referral.\n",
+ e->e_dn ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "ldbm_search: entry is referral\n",
+ 0, 0, 0 );
+#endif
+
+ if( erefs ) {
+ refs = referral_rewrite( erefs, matched_dn,
+ base, scope );
+
+ ber_bvecfree( erefs );
+ }
- send_ldap_result( conn, op, LDAP_REFERRAL,
- matched_dn, NULL, refs, NULL );
+ if( refs ) {
+ send_ldap_result( conn, op, LDAP_REFERRAL,
+ matched_dn, NULL, refs, NULL );
+ ber_bvecfree( refs );
- ber_bvecfree( refs );
- free( matched_dn );
+ } else {
+ send_ldap_result( conn, op, LDAP_OTHER, matched_dn,
+ "bad referral object", NULL, NULL );
+ }
+ free( matched_dn );
return 1;
}
- if ( tlimit == 0 && be_isroot( be, op->o_ndn ) ) {
- tlimit = -1; /* allow root to set no limit */
- } else {
- tlimit = (tlimit > be->be_timelimit || tlimit < 1) ?
- be->be_timelimit : tlimit;
- stoptime = op->o_time + tlimit;
+ if ( is_entry_alias( e ) ) {
+ /* don't deref */
+ deref = LDAP_DEREF_NEVER;
}
- if ( slimit == 0 && be_isroot( be, op->o_ndn ) ) {
- slimit = -1; /* allow root to set no limit */
- } else {
- slimit = (slimit > be->be_sizelimit || slimit < 1) ?
- be->be_sizelimit : slimit;
- }
-
- if ( scope == LDAP_SCOPE_BASE) {
+ if ( scope == LDAP_SCOPE_BASE ) {
+ cscope = LDAP_SCOPE_BASE;
candidates = base_candidate( be, e );
} else {
+ cscope = ( scope != LDAP_SCOPE_SUBTREE )
+ ? LDAP_SCOPE_BASE : LDAP_SCOPE_SUBTREE;
candidates = search_candidates( be, e, filter,
scope, deref, manageDSAit );
}
/* need normalized dn below */
realbase = ch_strdup( e->e_ndn );
+
cache_return_entry_r( &li->li_cache, e );
+searchit:
if ( candidates == NULL ) {
/* no candidates */
- Debug( LDAP_DEBUG_TRACE, "no candidates\n", 0,
- 0, 0 );
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
+ "ldbm_search: no candidates\n" ));
+#else
+ Debug( LDAP_DEBUG_TRACE, "ldbm_search: no candidates\n",
+ 0, 0, 0 );
+#endif
send_search_result( conn, op,
LDAP_SUCCESS,
goto done;
}
- for ( id = idl_firstid( candidates ); id != NOID;
- id = idl_nextid( candidates, id ) )
+ /* if not root, get appropriate limits */
+ if ( be_isroot( be, &op->o_ndn ) ) {
+ isroot = 1;
+ } else {
+ ( void ) get_limits( be, &op->o_ndn, &limit );
+ }
+
+ /* if candidates exceed to-be-checked entries, abort */
+ if ( !isroot && limit->lms_s_unchecked != -1 ) {
+ if ( ID_BLOCK_NIDS( candidates ) > (unsigned) limit->lms_s_unchecked ) {
+ send_search_result( conn, op, LDAP_UNWILLING_TO_PERFORM,
+ NULL, NULL, NULL, NULL, 0 );
+ rc = 0;
+ goto done;
+ }
+ }
+
+ /* if root an no specific limit is required, allow unlimited search */
+ if ( isroot ) {
+ if ( tlimit == 0 ) {
+ tlimit = -1;
+ }
+
+ if ( slimit == 0 ) {
+ slimit = -1;
+ }
+
+ } else {
+ /* if no limit is required, use soft limit */
+ if ( tlimit <= 0 ) {
+ tlimit = limit->lms_t_soft;
+
+ /* if requested limit higher than hard limit, abort */
+ } else if ( tlimit > limit->lms_t_hard ) {
+ /* no hard limit means use soft instead */
+ if ( limit->lms_t_hard == 0 ) {
+ tlimit = limit->lms_t_soft;
+
+ /* positive hard limit means abort */
+ } else if ( limit->lms_t_hard > 0 ) {
+ send_search_result( conn, op,
+ LDAP_UNWILLING_TO_PERFORM,
+ NULL, NULL, NULL, NULL, 0 );
+ rc = 0;
+ goto done;
+ }
+
+ /* negative hard limit means no limit */
+ }
+
+ /* if no limit is required, use soft limit */
+ if ( slimit <= 0 ) {
+ slimit = limit->lms_s_soft;
+
+ /* if requested limit higher than hard limit, abort */
+ } else if ( slimit > limit->lms_s_hard ) {
+ /* no hard limit means use soft instead */
+ if ( limit->lms_s_hard == 0 ) {
+ slimit = limit->lms_s_soft;
+
+ /* positive hard limit means abort */
+ } else if ( limit->lms_s_hard > 0 ) {
+ send_search_result( conn, op,
+ LDAP_UNWILLING_TO_PERFORM,
+ NULL, NULL, NULL, NULL, 0 );
+ rc = 0;
+ goto done;
+ }
+
+ /* negative hard limit means no limit */
+ }
+ }
+
+ /* compute it anyway; root does not use it */
+ stoptime = op->o_time + tlimit;
+
+ for ( id = idl_firstid( candidates, &cursor ); id != NOID;
+ id = idl_nextid( candidates, &cursor ) )
{
- int scopeok = 0;
+ int scopeok = 0;
/* check for abandon */
ldap_pvt_thread_mutex_lock( &op->o_abandonmutex );
e = id2entry_r( be, id );
if ( e == NULL ) {
- Debug( LDAP_DEBUG_ARGS, "search: candidate %ld not found\n",
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_INFO,
+ "ldbm_search: candidate %ld not found.\n", id ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "ldbm_search: candidate %ld not found\n",
id, 0, 0 );
+#endif
goto loop_continue;
}
if ( deref & LDAP_DEREF_SEARCHING && is_entry_alias( e ) ) {
Entry *matched;
int err;
- char *text;
+ const char *text;
e = deref_entry_r( be, e, &err, &matched, &text );
free( pdn );
goto loop_continue;
}
- free(pdn);
}
} else if ( dn_issuffix( e->e_ndn, realbase ) ) {
/* alias is within scope */
- Debug( LDAP_DEBUG_ARGS, "search: \"%s\" in subtree\n",
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
+ "ldbm_search: alias \"%s\" in subtree\n", e->e_dn ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "ldbm_search: alias \"%s\" in subtree\n",
e->e_dn, 0, 0 );
+#endif
+
goto loop_continue;
}
if ( !manageDSAit && scope != LDAP_SCOPE_BASE &&
is_entry_referral( e ) )
{
- struct berval **refs = get_entry_referrals(
- be, conn, op, e );
+ char *dn;
- send_search_reference( be, conn, op,
- e, refs, scope, NULL, &v2refs );
+ /* check scope */
+ if ( !scopeok && scope == LDAP_SCOPE_ONELEVEL ) {
+ if ( (dn = dn_parent( be, e->e_ndn )) != NULL ) {
+ scopeok = (dn == realbase)
+ ? 1
+ : (strcmp( dn, realbase ) ? 0 : 1 );
+ } else {
+ scopeok = (realbase == NULL || *realbase == '\0');
+ }
- ber_bvecfree( refs );
+ } else if ( !scopeok && scope == LDAP_SCOPE_SUBTREE ) {
+ dn = ch_strdup( e->e_ndn );
+ scopeok = dn_issuffix( dn, realbase );
+ free( dn );
+
+ } else {
+ scopeok = 1;
+ }
+
+ if( scopeok ) {
+ struct berval **erefs = get_entry_referrals(
+ be, conn, op, e, NULL, cscope );
+ struct berval **refs = referral_rewrite( erefs, e->e_dn, NULL,
+ scope == LDAP_SCOPE_SUBTREE
+ ? LDAP_SCOPE_SUBTREE
+ : LDAP_SCOPE_BASE );
+
+ send_search_reference( be, conn, op,
+ e, refs, NULL, &v2refs );
+
+ ber_bvecfree( refs );
+
+ } else {
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL2,
+ "ldbm_search: candidate referral %ld scope not okay\n",
+ id ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "ldbm_search: candidate referral %ld scope not okay\n",
+ id, 0, 0 );
+#endif
+ }
goto loop_continue;
}
/* if it matches the filter and scope, send it */
- if ( test_filter( be, conn, op, e, filter ) == 0 ) {
+ if ( test_filter( be, conn, op, e, filter ) == LDAP_COMPARE_TRUE ) {
char *dn;
/* check scope */
if ( !scopeok && scope == LDAP_SCOPE_ONELEVEL ) {
if ( (dn = dn_parent( be, e->e_ndn )) != NULL ) {
- (void) dn_normalize_case( dn );
scopeok = (dn == realbase)
? 1
: (strcmp( dn, realbase ) ? 0 : 1 );
- free( dn );
-
} else {
scopeok = (realbase == NULL || *realbase == '\0');
}
}
if (e) {
- switch ( send_search_entry( be, conn, op, e,
- attrs, attrsonly, 0, NULL ) ) {
+ int result = send_search_entry(be, conn, op,
+ e, attrs, attrsonly, NULL);
+
+ switch (result) {
case 0: /* entry sent ok */
nentries++;
break;
}
}
} else {
- Debug( LDAP_DEBUG_TRACE, "candidate %ld scope not okay\n",
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL2,
+ "ldbm_search: candidate entry %ld scope not okay\n", id ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "ldbm_search: candidate entry %ld scope not okay\n",
id, 0, 0 );
+#endif
}
+
} else {
- Debug( LDAP_DEBUG_TRACE, "candidate %ld does match filter\n",
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL2,
+ "ldbm_search: candidate entry %ld does not match filter\n", id ));
+#else
+ Debug( LDAP_DEBUG_TRACE,
+ "ldbm_search: candidate entry %ld does not match filter\n",
id, 0, 0 );
+#endif
}
loop_continue:
ldap_pvt_thread_yield();
}
+
send_search_result( conn, op,
v2refs == NULL ? LDAP_SUCCESS : LDAP_REFERRAL,
NULL, NULL, v2refs, NULL, nentries );
rc = 0;
done:
- idl_free( candidates );
+ if( candidates != NULL )
+ idl_free( candidates );
ber_bvecfree( v2refs );
if( realbase ) free( realbase );
static ID_BLOCK *
base_candidate(
Backend *be,
- Entry *e
-)
+ Entry *e )
{
ID_BLOCK *idl;
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_ENTRY,
+ "base_candidate: base (%s)\n", e->e_dn ));
+#else
Debug(LDAP_DEBUG_TRACE, "base_candidates: base: \"%s\"\n",
e->e_dn, 0, 0);
+#endif
+
idl = idl_alloc( 1 );
idl_insert( &idl, e->e_id, 1 );
Filter *filter,
int scope,
int deref,
- int manageDSAit
-)
+ int manageDSAit )
{
- struct ldbminfo *li = (struct ldbminfo *) be->be_private;
ID_BLOCK *candidates;
- Filter *f, *rf, *af, *lf;
-
- Debug(LDAP_DEBUG_TRACE, "search_candidates: base=\"%s\" s=%d d=%d\n",
+ Filter f, fand, rf, af, xf;
+ AttributeAssertion aa_ref, aa_alias;
+ static struct berval bv_ref = { sizeof("REFERRAL")-1, "REFERRAL" };
+ static struct berval bv_alias = { sizeof("ALIAS")-1, "ALIAS" };
+
+#ifdef NEW_LOGGING
+ LDAP_LOG(( "backend", LDAP_LEVEL_DETAIL1,
+ "search_candidates: base (%s) scope %d deref %d\n",
+ e->e_ndn, scope, deref ));
+#else
+ Debug(LDAP_DEBUG_TRACE,
+ "search_candidates: base=\"%s\" s=%d d=%d\n",
e->e_ndn, scope, deref );
+#endif
+
- f = NULL;
+ xf.f_or = filter;
+ xf.f_choice = LDAP_FILTER_OR;
+ xf.f_next = NULL;
if( !manageDSAit ) {
/* match referrals */
- rf = (Filter *) ch_malloc( sizeof(Filter) );
- rf->f_next = NULL;
- rf->f_choice = LDAP_FILTER_OR;
- rf->f_or = (Filter *) ch_malloc( sizeof(Filter) );
- rf->f_or->f_choice = LDAP_FILTER_EQUALITY;
- rf->f_or->f_avtype = ch_strdup( "objectclass" );
- rf->f_or->f_avvalue.bv_val = ch_strdup( "REFERRAL" );
- rf->f_or->f_avvalue.bv_len = sizeof("REFERRAL")-1;
- rf->f_or->f_next = filter;
- f = rf;
- } else {
- rf = NULL;
- f = filter;
+ rf.f_choice = LDAP_FILTER_EQUALITY;
+ rf.f_ava = &aa_ref;
+ rf.f_av_desc = slap_schema.si_ad_objectClass;
+ rf.f_av_value = &bv_ref;
+ rf.f_next = xf.f_or;
+ xf.f_or = &rf;
}
if( deref & LDAP_DEREF_SEARCHING ) {
/* match aliases */
- af = (Filter *) ch_malloc( sizeof(Filter) );
- af->f_next = NULL;
- af->f_choice = LDAP_FILTER_OR;
- af->f_or = (Filter *) ch_malloc( sizeof(Filter) );
- af->f_or->f_choice = LDAP_FILTER_EQUALITY;
- af->f_or->f_avtype = ch_strdup( "objectclass" );
- af->f_or->f_avvalue.bv_val = ch_strdup( "ALIAS" );
- af->f_or->f_avvalue.bv_len = sizeof("ALIAS")-1;
- af->f_or->f_next = f;
- f = af;
- } else {
- af = NULL;
- }
-
- if ( scope == LDAP_SCOPE_SUBTREE ) {
- lf = (Filter *) ch_malloc( sizeof(Filter) );
- lf->f_next = NULL;
- lf->f_choice = LDAP_FILTER_AND;
- lf->f_and = (Filter *) ch_malloc( sizeof(Filter) );
-
- lf->f_and->f_choice = LDAP_FILTER_SUBSTRINGS;
- lf->f_and->f_sub_type = ch_strdup( "dn" );
- lf->f_and->f_sub_initial = NULL;
- lf->f_and->f_sub_any = NULL;
- lf->f_and->f_sub_final = ch_strdup( e->e_ndn );
-
- lf->f_and->f_next = f;
- f = lf;
-
- } else if ( scope == LDAP_SCOPE_ONELEVEL ) {
- char buf[16];
-
- lf = (Filter *) ch_malloc( sizeof(Filter) );
- lf->f_next = NULL;
- lf->f_choice = LDAP_FILTER_AND;
- lf->f_and = (Filter *) ch_malloc( sizeof(Filter) );
-
- lf->f_and->f_choice = LDAP_FILTER_EQUALITY;
- lf->f_and->f_ava.ava_type = ch_strdup( "id2children" );
- sprintf( buf, "%ld", e != NULL ? e->e_id : 0 );
- lf->f_and->f_ava.ava_value.bv_val = ch_strdup( buf );
- lf->f_and->f_ava.ava_value.bv_len = strlen( buf );
-
- lf->f_and->f_next = f;
- f = lf;
-
- } else {
- lf = NULL;
- }
-
- candidates = filter_candidates( be, f );
-
- /* free up filter additions we allocated above */
- if( lf != NULL ) {
- lf->f_and->f_next = NULL;
- filter_free( lf );
+ af.f_choice = LDAP_FILTER_EQUALITY;
+ af.f_ava = &aa_alias;
+ af.f_av_desc = slap_schema.si_ad_objectClass;
+ af.f_av_value = &bv_alias;
+ af.f_next = xf.f_or;
+ xf.f_or = ⁡
}
- if( af != NULL ) {
- af->f_or->f_next = NULL;
- filter_free( af );
- }
+ f.f_next = NULL;
+ f.f_choice = LDAP_FILTER_AND;
+ f.f_and = &fand;
+ fand.f_choice = scope == LDAP_SCOPE_SUBTREE
+ ? SLAPD_FILTER_DN_SUBTREE
+ : SLAPD_FILTER_DN_ONE;
+ fand.f_dn = e->e_ndn;
+ fand.f_next = xf.f_or == filter ? filter : &xf ;
- if( rf != NULL ) {
- rf->f_or->f_next = NULL;
- filter_free( rf );
- }
+ candidates = filter_candidates( be, &f );
return( candidates );
}